On Sat, 2006-02-11 at 01:31 +0100, Stefan Richter wrote:
> Andrew Morton wrote:
> > Miles Lane <[email protected]> wrote:
> >>BUG: warning at drivers/ieee1394/ohci1394.c:235/get_phy_reg()
> >
> > That's a -mm-only warning telling you that get_phy_reg() is doing a
> > one-millisecond-or-more busywait while local interrupts are disabled.
>
> Same with set_phy_reg, ohci_soft_reset, ohci_hw_csr_reg. At least the
> callers of ohci_hw_csr_reg (in particular, csr_highlevel.host_reset,
> furthermore csr_highlevel.add_host) could fairly easily be converted to
> a workqueue job or perhaps moved to the nodemgr thread. I have not
> checked the other offending functions yet.
In fact I'm pretty sure we have seen reports on the linux-audio-user
list of apps reporting underruns when a 1394 drive is accessed.
Lee
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